Roughly six billion metric tons of sand are dredged from the sea floor each year (BBC, September 5, 2023). As one analyst noted, this is equivalent to one million dump-truck loads each day! The majority of sand dredging occurs off the east coast of America, in the North Sea, and in the South China Sea. The majority of dredged sand is used to make concrete and glass. It is also used for constructing roads, dams, and even solar panels.